<template>
<div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear='getGoodsList'>
                    <el-button slot="append" icon="el-icon-search" @click='getGoodsList'></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click='addGoodsPage'>添加商品</el-button>
            </el-col>
        </el-row>

        <!--table表区域-->
        <el-table :data='goodsList' border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格(元)" prop="goods_price" width="200px"></el-table-column>
            <el-table-column label="商品重量" prop="goods_weight" width="100px"></el-table-column>
            <el-table-column label="创建时间" prop="add_time" width="200px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="300px">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click='removeById(scope.row.goods_id)'>删除</el-button>
                </template>
            </el-table-column>
        </el-table>

        <!--分页区域-->
        <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total" background>
        </el-pagination>
    </el-card>
</div>
</template>

<script>
export default {
    data() {
        return {
            // 查询参数
            queryInfo: {
                query: '',
                pagenum: 1,
                pagesize: 5
            },
            // 商品列表
            goodsList: [],
            // 商品总条数
            total: 0
        }
    },
    created() {
        this.getGoodsList()
    },
    methods: {
        // 获取商品列表数据
        async getGoodsList() {
            const {
                data: res
            } = await this.$http.get('goods', {
                params: this.queryInfo
            })
            if (res.meta.status !== 200) {
                return this.$message.error('获取商品列表失败！')
            }
            this.$message.success('获取商品列表成功！')
            console.log(res.data)
            this.goodsList = res.data.goods
            this.total = res.data.total
        },
        // 监听每页显示的数据条数的变化
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 监听当前页的变化
        handleCurrentChange(newNum) {
            this.queryInfo.pagenum = newNum
            this.getGoodsList()
        },
        // 点击按钮删除当前数据
        async removeById(id) {
            const confirmResult = await this.$confirm(
                '此操作将永久删除该参数, 是否继续?',
                '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }
            ).catch((err) => err)
            // 如果用户确认了删除，则返回字符串confirm
            // 如果用户取消了删除，则返回字符串cancel
            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            // console.log('确认了删除')
            const {
                data: res
            } = await this.$http.delete(
                `goods/${id}`
            )
            if (res.meta.status !== 200) {
                return this.$message.error('删除商品失败')
            }
            this.$message.success('删除商品成功')
            this.getGoodsList()
        },
        // 点击按钮跳转添加商品页面
        addGoodsPage() {
            this.$router.push('/goods/add')
        }
    }
}
</script>

<style lang="less" scoped>
.el-table {
    margin-bottom: 15px;
}
</style>
